Firewall

Turning a Splunk Dashboard into a Hands‑On Threat‑Hunting Playbook

Splunk dashboards are great for visualizing data, but they rarely give you a ready‑to‑execute hunting workflow. In a real‑world environment you need a playbook that tells you what to look for, how to filter the data, and what to do when you find something. This post walks through turning an existing Splunk dashboard into a fully documented playbook that can be run by a sysadmin or a SOC analyst on a Linux host. The focus is on practical commands, trade‑offs, and troubleshooting tips that fit the Linux‑security‑first mindset of the Linux Security blog.

In the world of network security, firewalls play a critical role in protecting systems from unauthorized access and malicious traffic. They are a fundamental component of any secure network infrastructure. However, not all firewalls are created equal, and understanding the differences between application-level firewalls and IP-level firewalls is crucial for building an effective defense strategy.

In this post, we’ll explore the key distinctions between these two types of firewalls, with a particular focus on the advantages of application-level firewalls. Let’s break down the basic concepts first.